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merged branch wtih dev

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This commit is contained in:
Jesse Cirimelli-Low
2018-12-03 09:47:34 -08:00
parent a4b1d2f13b bcc6b95564
commit 9501b99df7
57 changed files with 1230 additions and 1424 deletions
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compiler/base/hierarchy_layout.py
+50 -37
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@@ -673,11 +673,13 @@ class layout(lef.lef):
offset=bus_pos,
rotate=90)
def add_horizontal_trunk_route(self, pins, trunk_offset,
def add_horizontal_trunk_route(self,
pins,
trunk_offset,
layer_stack=("metal1", "via1", "metal2"),
pitch=None):
"""
Create a trunk route for all pins with the the trunk located at the given y offset.
Create a trunk route for all pins with the trunk located at the given y offset.
"""
if not pitch:
pitch = self.m1_pitch
@@ -704,15 +706,18 @@ class layout(lef.lef):
# Route each pin to the trunk
for pin in pins:
# Bend to the center of the trunk so it adds a via automatically
mid = vector(pin.center().x, trunk_offset.y)
self.add_wire(layer_stack, [pin.center(), mid, trunk_mid])
self.add_path(layer_stack[2], [pin.center(), mid])
self.add_via_center(layers=layer_stack,
offset=mid)
def add_vertical_trunk_route(self, pins, trunk_offset,
def add_vertical_trunk_route(self,
pins,
trunk_offset,
layer_stack=("metal1", "via1", "metal2"),
pitch=None):
"""
Create a trunk route for all pins with the the trunk located at the given x offset.
Create a trunk route for all pins with the trunk located at the given x offset.
"""
if not pitch:
pitch = self.m2_pitch
@@ -740,18 +745,21 @@ class layout(lef.lef):
# Route each pin to the trunk
for pin in pins:
# Bend to the center of the trunk so it adds a via automatically
mid = vector(trunk_offset.x, pin.center().y)
self.add_wire(layer_stack, [pin.center(), mid, trunk_mid])
self.add_path(layer_stack[0], [pin.center(), mid])
self.add_via_center(layers=layer_stack,
offset=mid,
rotate=90)
def create_channel_route(self, netlist, pins, offset,
layer_stack=("metal1", "via1", "metal2"), pitch=None,
def create_channel_route(self, netlist,
offset,
layer_stack=("metal1", "via1", "metal2"),
pitch=None,
vertical=False):
"""
The net list is a list of the nets. Each net is a list of pin
names to be connected. Pins is a dictionary of the pin names
to the pin structures. Offset is the lower-left of where the
The net list is a list of the nets. Each net is a list of pins
to be connected. Offset is the lower-left of where the
routing channel will start. This does NOT try to minimize the
number of tracks -- instead, it picks an order to avoid the
vertical conflicts between pins.
@@ -786,7 +794,10 @@ class layout(lef.lef):
def vcg_pin_overlap(pin1, pin2, vertical):
""" Check for vertical or horizontal overlap of the two pins """
# FIXME: If the pins are not in a row, this may break.
# However, a top pin shouldn't overlap another top pin, for example, so the
# extra comparison *shouldn't* matter.
# Pin 1 must be in the "BOTTOM" set
x_overlap = pin1.by() < pin2.by() and abs(pin1.center().x-pin2.center().x)<pitch
@@ -815,10 +826,7 @@ class layout(lef.lef):
for pin_list in netlist:
net_name = "n{}".format(index)
index += 1
nets[net_name] = []
for pin_name in pin_list:
pin = pins[pin_name]
nets[net_name].append(pin)
nets[net_name] = pin_list
# Find the vertical pin conflicts
# FIXME: O(n^2) but who cares for now
@@ -834,8 +842,6 @@ class layout(lef.lef):
if vcg_nets_overlap(nets[net_name1], nets[net_name2], vertical):
vcg[net_name2].append(net_name1)
#FIXME: What if we have a cycle?
# list of routes to do
while vcg:
#from pprint import pformat
@@ -868,23 +874,21 @@ class layout(lef.lef):
offset += vector(0,pitch)
def create_vertical_channel_route(self, netlist, pins, offset,
def create_vertical_channel_route(self, netlist, offset,
layer_stack=("metal1", "via1", "metal2"),
pitch=None):
"""
Wrapper to create a vertical channel route
"""
self.create_channel_route(netlist, pins, offset, layer_stack,
pitch, vertical=True)
self.create_channel_route(netlist, offset, layer_stack, pitch, vertical=True)
def create_horizontal_channel_route(self, netlist, pins, offset,
def create_horizontal_channel_route(self, netlist, offset,
layer_stack=("metal1", "via1", "metal2"),
pitch=None):
"""
Wrapper to create a horizontal channel route
"""
self.create_channel_route(netlist, pins, offset,
layer_stack, pitch, vertical=False)
self.create_channel_route(netlist, offset, layer_stack, pitch, vertical=False)
def add_enclosure(self, insts, layer="nwell"):
""" Add a layer that surrounds the given instances. Useful
@@ -922,21 +926,30 @@ class layout(lef.lef):
def add_power_pin(self, name, loc, rotate=90):
def add_power_pin(self, name, loc, rotate=90, start_layer="metal1"):
"""
Add a single power pin from M3 down to M1 at the given center location
Add a single power pin from M3 down to M1 at the given center location.
The starting layer is specified to determine which vias are needed.
"""
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=loc,
rotate=float(rotate))
via=self.add_via_center(layers=("metal2", "via2", "metal3"),
if start_layer=="metal1":
self.add_via_center(layers=("metal1", "via1", "metal2"),
offset=loc,
rotate=float(rotate))
self.add_layout_pin_rect_center(text=name,
layer="metal3",
offset=loc,
width=via.width,
height=via.height)
if start_layer=="metal1" or start_layer=="metal2":
via=self.add_via_center(layers=("metal2", "via2", "metal3"),
offset=loc,
rotate=float(rotate))
if start_layer=="metal3":
self.add_layout_pin_rect_center(text=name,
layer="metal3",
offset=loc)
else:
self.add_layout_pin_rect_center(text=name,
layer="metal3",
offset=loc,
width=via.width,
height=via.height)
def add_power_ring(self, bbox):
"""